guide to orion 3-d flythrough
... The central area of the nebula is called the Trapezium cluster. It is dominated by four young, massive stars in a kite-like arrangement. The brightest of these stars, which has a luminosity 100,000 times that of the Sun, provides the energy that creates the nebula as we see it. It produces a flood o ...
... The central area of the nebula is called the Trapezium cluster. It is dominated by four young, massive stars in a kite-like arrangement. The brightest of these stars, which has a luminosity 100,000 times that of the Sun, provides the energy that creates the nebula as we see it. It produces a flood o ...
OUSNMAY06 - The George Abell Observatory
... atmospheric conditions. Watch for the Great Red Spot, smaller white spots, belt detail, satellite shadows etc. Use as high a magnification as seeing conditions allow. The use of coloured filters can enhance features. Try a selection and you will be surprised at their effect. Following the ever-chang ...
... atmospheric conditions. Watch for the Great Red Spot, smaller white spots, belt detail, satellite shadows etc. Use as high a magnification as seeing conditions allow. The use of coloured filters can enhance features. Try a selection and you will be surprised at their effect. Following the ever-chang ...
9.2 The Solar Interior
... The process that powers most stars is a threestep fusion process. How it gets energy! ...
... The process that powers most stars is a threestep fusion process. How it gets energy! ...
Constellations - Sierra Star Gazers
... has the distinction of being one of the largest and brightest stars in the known galaxy. While too far for a good parallax distance calculation, Mu Cephei is thought to be about 2400 light years away. With a radius 1,650 times larger than our Sun’s, if placed in the center of our solar system the su ...
... has the distinction of being one of the largest and brightest stars in the known galaxy. While too far for a good parallax distance calculation, Mu Cephei is thought to be about 2400 light years away. With a radius 1,650 times larger than our Sun’s, if placed in the center of our solar system the su ...
E8B6_CRT_CR_MSTIPS_Final
... C. the Milky Way Galaxy is a barred-spiral galaxy which has several tentacle-like arms. D. dense regions of dust and gas block light from stars in portions of the Milky Way Galaxy. ...
... C. the Milky Way Galaxy is a barred-spiral galaxy which has several tentacle-like arms. D. dense regions of dust and gas block light from stars in portions of the Milky Way Galaxy. ...
Conference Summary Richard Ellis (Caltech) ITALIA
... Stellar mass density at z~5-6 (and with greater uncertainty at z~7) implies past SF in low luminosity galaxies may be sufficient for reionization, especially if escape fraction of photons is >0.2 Stark et al 2007,2009; Labbé et al 2009ab ...
... Stellar mass density at z~5-6 (and with greater uncertainty at z~7) implies past SF in low luminosity galaxies may be sufficient for reionization, especially if escape fraction of photons is >0.2 Stark et al 2007,2009; Labbé et al 2009ab ...
The magnitude scale, parallax, the parsec, and Cepheid distances
... Typical range of Abs. mag: stars -‐1 to +10, galaxies -‐24 to -‐6 Typical range of app. mag: stars/galaxies, -‐27 (Sun) to +30 (faintest detectable star or galaxy) – Objects with app mag < ...
... Typical range of Abs. mag: stars -‐1 to +10, galaxies -‐24 to -‐6 Typical range of app. mag: stars/galaxies, -‐27 (Sun) to +30 (faintest detectable star or galaxy) – Objects with app mag < ...
Magnitude scale theory
... Consider two stars A and B. Star A appears to be brighter than star B. In other words the intensity of the light reaching the observer from star A is greater than that from star B. ...
... Consider two stars A and B. Star A appears to be brighter than star B. In other words the intensity of the light reaching the observer from star A is greater than that from star B. ...
Astronomy 101 Exam 3, Form A Name: SUID: Lab section number:
... 9. Which of the following describes astronomers’ ability to learn what kinds of molecules (which chemical compounds) are in space? (A) Astronomers don’t have any way to do this efficiently (B) Molecules scatter x-rays in particular ways based on their shape; this technique is called “x-ray crystall ...
... 9. Which of the following describes astronomers’ ability to learn what kinds of molecules (which chemical compounds) are in space? (A) Astronomers don’t have any way to do this efficiently (B) Molecules scatter x-rays in particular ways based on their shape; this technique is called “x-ray crystall ...
Where do you find yourself now??
... The map shows several stars visible with the naked eye which are located deep within the Orion arm. The most notable group of stars here are main stars in the constellation of Orion -from which the spiral arm gets its name. All of these stars are bright giant and supergiant -stars, thousands of time ...
... The map shows several stars visible with the naked eye which are located deep within the Orion arm. The most notable group of stars here are main stars in the constellation of Orion -from which the spiral arm gets its name. All of these stars are bright giant and supergiant -stars, thousands of time ...
“Where Do Atoms Come From?” Subtitle: The Relevance of
... atomic structure of matter. Bohr’s major insight was the idea of quantum jumps or electron transitions that are revealed in the “fingerprints” known as atomic spectra. His discovery of the physical nature of hydrogen solved part of the problem that was, heretofore, lacking in understanding; just how ...
... atomic structure of matter. Bohr’s major insight was the idea of quantum jumps or electron transitions that are revealed in the “fingerprints” known as atomic spectra. His discovery of the physical nature of hydrogen solved part of the problem that was, heretofore, lacking in understanding; just how ...
Take our Astronomy Test
... What is the stellar classification system and who developed it? What are Cepheid variable stars, who discovered them, and how are they used for finding distances? What is an open cluster? What is a globular cluster? What is the composition of the interstellar medium? Where are stars born? Under what ...
... What is the stellar classification system and who developed it? What are Cepheid variable stars, who discovered them, and how are they used for finding distances? What is an open cluster? What is a globular cluster? What is the composition of the interstellar medium? Where are stars born? Under what ...
Hypervelocity Globular: A beacon of merging clusters Oleg Gnedin with Alexey Vikhlinin
... • A hypervelocity globular cluster in the Virgo cluster: radial velocity = -1000 km/s • Cannot survive tidal forces of supermassive black hole in M87: requires different acceleration mechanism • Likely belongs to the globular cluster system of M86 group, which is merging head-on with the Virgo clust ...
... • A hypervelocity globular cluster in the Virgo cluster: radial velocity = -1000 km/s • Cannot survive tidal forces of supermassive black hole in M87: requires different acceleration mechanism • Likely belongs to the globular cluster system of M86 group, which is merging head-on with the Virgo clust ...
THE SUN IS NOT AN AVERAGE STAR Sometimes biblical creation
... stars are multiple stars ..."13 Thus only some 20% of stars are single. This statement was written in 1952, yet evolutionary ...
... stars are multiple stars ..."13 Thus only some 20% of stars are single. This statement was written in 1952, yet evolutionary ...
Lecture notes -- pdf file - University of Iowa Astrophysics
... So what are the distances to the stars? • First measurements made in 1838 (Friedrich Bessel) • Closest star is Alpha Centauri, p=0.75 arcseconds, d=1.33 parsecs= 4.35 light years • Nearest stars are a few to many parsecs, 5 - 20 light years ...
... So what are the distances to the stars? • First measurements made in 1838 (Friedrich Bessel) • Closest star is Alpha Centauri, p=0.75 arcseconds, d=1.33 parsecs= 4.35 light years • Nearest stars are a few to many parsecs, 5 - 20 light years ...
08 September: How far away are the closest stars?
... shrunk to 1 cm (0.4 inches), Alpha Centauri would be 2.75 km (1.7 miles) away ...
... shrunk to 1 cm (0.4 inches), Alpha Centauri would be 2.75 km (1.7 miles) away ...
star guide 2013
... An asteroid is a small rocky or metallic body in orbit around the Sun. Most are located between the orbits of Mars and Jupiter and are known as main-belt asteroids. Asteroid Ceres, at nearly 1,000km across, was reclassified in 2006 as a dwarf planet. The remaining asteroids are significantly smaller ...
... An asteroid is a small rocky or metallic body in orbit around the Sun. Most are located between the orbits of Mars and Jupiter and are known as main-belt asteroids. Asteroid Ceres, at nearly 1,000km across, was reclassified in 2006 as a dwarf planet. The remaining asteroids are significantly smaller ...
Take Something Like a Star
... We grant your loftiness the right To some obscurity of cloud— It will not do to say of night, Since dark is what brings out your light. Some mystery becomes the proud. But to be wholly taciturn In your reserve is not allowed. Say something to us we can learn By heart and when alone repeat. Say somet ...
... We grant your loftiness the right To some obscurity of cloud— It will not do to say of night, Since dark is what brings out your light. Some mystery becomes the proud. But to be wholly taciturn In your reserve is not allowed. Say something to us we can learn By heart and when alone repeat. Say somet ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.